Laser based X-ray sources at hν ≈ 0.9 - 1.2 keV (Fe to Cu L-shell) developed for applications are studied from the point of view of X-ray emission spectra. We show X-ray spectra obtained with different laser intensities and wavelengths using Nd and KrF lasers. Results are qualitatively compared with the predictions of simple analytical models for plasma temperature Te and average ionization Z*. When using KrF lasers it is possible to introduce a He atmosphere in the interaction chamber to reduce the debris problem. We recorded X-ray spectra at different He pressures and showed that X-ray L-shell emission of Fe and Cu is largely independent from the pressure.
L-shell x-ray spectroscopy of laser-produced plasmas in the 1-keV region
PALLADINO, Libero
1991-01-01
Abstract
Laser based X-ray sources at hν ≈ 0.9 - 1.2 keV (Fe to Cu L-shell) developed for applications are studied from the point of view of X-ray emission spectra. We show X-ray spectra obtained with different laser intensities and wavelengths using Nd and KrF lasers. Results are qualitatively compared with the predictions of simple analytical models for plasma temperature Te and average ionization Z*. When using KrF lasers it is possible to introduce a He atmosphere in the interaction chamber to reduce the debris problem. We recorded X-ray spectra at different He pressures and showed that X-ray L-shell emission of Fe and Cu is largely independent from the pressure.Pubblicazioni consigliate
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